Filler material for welding



Patented Jan. 9, 1940 UNITED STATES PATENT "OFFICE 2,186,117 mum MATERIAL FOR WELDING Arthur R. Lytle, Niagara Falls, N. Y., assignor to.

Oxweld Acetylene Company, a corporation of West'Virginia No Drawing. Original application May I, 1938, 1

Serial No. 206,531. Divided. and this applica tion June 1, 1939, Serial No; 276,817

2 Claims.

This invention relates to filler material for welding, brazing, or soldering, and especially to such material in the form of a'rod. This application is a division of my application Serial No.

5 206,531 filed May 1, 1938.

Ordinary brass of the type containing about 60% copper and 40% zinc is an inexpensive material that can be used for welding, brazing, or soldering, but such uses are restricted in some 0 fields by the relatively high meltingpoint of the material (about 880 C.) and by its property of emitting zinc fumes when melted.

According to the present invention, the above disadvantages of brass weld filler-material are overcome by including 1% to. 6% cadmium and 0.01% to 0.5% silicon in a material containing 62% to 47% copper and the remainder substantially zinc, the zinc content being at least 20%. Silver may be added in an amount up to about 20 10%. Preferably, the cadmium content is between 2% and 4%, and the silver; when present, is between 2% and 6%. Small amounts 0! other and incidental materials, such as tin, iron, and

25 manganese, may also be included without sub-- stantially altering the character of the material,

but it is preferred that the total amount of such additional materials be not over 2%. I

Compositions of the weld filler material of'this invention that have been successfully used in the form of welding rods in the brazing oi malleable iron and other metals contain, for example:

1. Weld filler material --=containing approximately 62% to 47% copper, 1% to 6% cadmium, silver in substantial amount not exceeding 10%, 0.01% to 0.5% silicon, remainder zinc.

2, Weld filler material containing substantially 62% to 47% coppe 2% to 4% cadmium. 2% to 6% silver, 0.01% to 0.5% silicon, remainder zinc.-

ARTHUR R. LYTLE. 

